a.amankwah
TL2 · Tampere
Contributes reviews on supplier material. Based in Tampere.
Joined 19 October 2024 · last posted 3d
77Posts here
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CJC-1295 with and without DAC: what the modification does Replied, post #122 · Compounds › Secretagogues & GH axis · 25 Jul 2026 · 0 likes A mass result for a short peptide is more discriminating than for a long one, because a single residue difference is a larger proportion of the total. That makes…
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Which categories are strict and which are relaxed, honestly Replied, post #38 · Start Here › Welcome · 22 Jul 2026 · 28 likes If you want a fast orientation, read three solved topics in the subcategory you care about. Solved means somebody said the answer worked, which is more signal than…
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Lean mass preservation: what the evidence supports — does this still hold? Replied, post #119 · Outcomes › Body composition · 21 Jul 2026 · 21 likes Picking up post #118: that is the part I would want checked first. Lean mass preservation is a question about a distribution, not about a value, and treating it as a…
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MS/MS sequence confirmation: what it costs and when it is worth it Replied, post #6 · Analytics › Mass spectrometry · 18 Jul 2026 · 2 likes Taking post #3 at face value and following it one step further. Tandem mass spectrometry with fragmentation gives sequence information that intact mass cannot. It is…
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Seven-day rolling means and why weekly readings mislead Replied, post #45 · Outcomes › Progress reports · 17 Jul 2026 · 1 like Seven-day rolling was covered in the wiki last year and the page has a review date on it, which is a better starting point than my memory of a thread.
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[2026 update] Detection wavelength and why 214 nm and 280 nm disagree Replied, post #30 · Analytics › HPLC & UHPLC · 12 Jul 2026 · 9 likes Taking post #27 at face value and following it one step further. Mobile-phase preparation is a genuine source of between-laboratory variation. Acid concentration and…
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Documenting a supplier's response to a discrepancy Replied, post #29 · Sourcing › Vendor reports · 3 Jul 2026 · 7 likes This follows post #28 rather than contradicting it. Do not adjust a reported figure. Post what the laboratory said and put your interpretation in a separate sentence.
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GHRH analogues versus ghrelin mimetics: different mechanisms, conflated discussion Replied, post #34 · Compounds › Secretagogues & GH axis · 30 Jun 2026 · 11 likes Research-use-only secretagogues are not approved for human use. That statement is doing real work in this subcategory, where the published evidence base is thinner than…
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Primary endpoint hierarchies and why order matters — one year on Replied, post #28 · Evidence › Trials · 28 Jun 2026 · 2 likes Dropout is information: high dropout rates can indicate tolerability problems or lower efficacy than the summary suggests. Where the analysis handled dropouts matters.…
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Secretagogues and glucose tolerance: the mechanistic concern Replied, post #48 · Compounds › Secretagogues & GH axis · 24 Jun 2026 · 31 likes Secretagogues and glucose tolerance is a question about a distribution, not about a value, and treating it as a value is what produces the confident wrong answers.
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Named, unnamed and unspecified impurities as regulatory categories — the long version Replied, post #13 · Analytics › Impurities & related substances · 20 Jun 2026 · 29 likes Incomplete deprotection leaves a protecting group attached, raising the mass substantially and usually pushing retention much later. A late-eluting peak on a peptide…
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Trust level 3 requirements: a clarification — does this still hold? Replied, post #67 · Meta › Announcements · 19 Jun 2026 · 13 likes Adding a note of thanks rather than an opinion. I did not know most of that.